File:Proxima xray.jpg

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Summary[edit | edit source]

This is a Chandra X-ray Observatory image of Proxima Centauri.

Licensing[edit | edit source]

Description	This is a Chandra X-ray Observatory image of Proxima Centauri.
Source	The image appears on a website entitled, "Proxima Centauri: The Nearest Star to the Sun" at url=http://chandra.harvard.edu/photo/2004/proxima/.
Date	November 09, 2004
Author	B. Wargelin and J. Drake 2002, Astrophysical J. 578, 503 M. Gudel et al. Astronomy and Astrophysics, 416, 713
Rationale	No free licensed or public domain alternatives known to exist to show a Chandra X-ray Observatory image of Proxima Centauri.
Permission	Fair Use

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	Date/Time	Thumbnail	Dimensions	User	Comment
current	17:25, 18 April 2014		576 × 576 (67 KB)	Marshallsumter (discuss \| contribs)	This is a Chandra X-ray Observatory image of Proxima Centauri. Category:Astronomy Images

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Image title	X-ray observations of Proxima Centauri, the nearest star to the Sun, have shown that its surface is in a state of turmoil. Flares, or explosive outbursts occur almost continually. This behavior can be traced to Proxima Centauri's low mass, about a tenth that of the Sun. In the cores of low mass stars, nuclear fusion reactions that convert hydrogen to helium proceed very slowly, and create a turbulent, convective motion throughout their interiors. This motion stores up magnetic energy which is often released explosively in the star's upper atmosphere where it produces flares in X-rays and other forms of light. X-rays from Proxima Centauri are consistent with a point-like source. The extended X-ray glow is an instrumental effect. The nature of the two dots above the image is unknown - they could be background sources.
Author	Chandra X-ray Observatory Center
Source	Chandra X-ray Observatory
Headline	A red dwarf star 4 light years from the Sun.
Credit/Provider	NASA/CXC/SAO
Short title	The Nearest Star to the Sun
Usage terms	http://chandra.harvard.edu/photo/image_use.html
Date and time of data generation	9 November 2004
Orientation	Normal
Horizontal resolution	57.002334594727 dpi
Vertical resolution	0.14866688996039 dpi
Exif version	2.21
Color space	Uncalibrated
Unique ID of original document	adobe:docid:photoshop:033e79e2-b022-11d8-9c19-b6dba7b8c73c
File change date and time	13:09, 27 May 2004
Software used	Adobe Photoshop 7.0
Date metadata was last modified	10:05, 21 March 2012
Keywords	Proxima Centauri
Contact information	cxcpub@cfa.harvard.edu http://chandra.harvard.edu 60 Garden St. Cambridge, MA, 02138 USA 617.496.7941
IIM version	4